A couple have been jailed after "unwittingly" hiding the dismembered body of murdered teenager Becky Watts in their garden shed, believing it was drugs or stolen property.

Karl Demetrius, 30, and Jaydene Parsons, 23, admitted a charge of assisting Nathan Matthews after he killed his stepsister last year.

Matthews, a former TA soldier, suffocated 16-year-old Becky at her home in Crown Hill, Bristol, while kidnapping her with his girlfriend Shauna Hoare, 21, on 19 February.

Four days later, Demetrius and Parsons agreed to hide bags and a storage box in a shed at their nearby home for Matthews.

He promised them a share of £10,000 to take the items and the pair agreed to the deal.

Text messages and phone calls between Parsons and Demetrius revealed an agreement to hide the items for cash.

But unknown to them, Matthews and Hoare had dismembered Becky's body in their bath with an £80 saw from B&Q and packed it into the bags and box.

Officers found Becky's remains in the locked shed on 3 March after Matthews confessed to killing her.

Video:Nov: Becky Watts Killers Jailed

Demetrius was sentenced to two years in prison on Friday, and Parsons for 16 months.

Judge Neil Ford QC, the Recorder of Bristol, told the pair, who had apologised to Becky's family for their actions: "You had unwittingly agreed to the hiding of the body of Rebecca Watts and objects connected to her abduction, killing and dismemberment.

"You were motivated by money and knew that you were assisting Matthews to hide items which you believed were linked to a relevant offence.

Video:Police: Pair Never Showed Remorse

"Those who assist offenders in ignorance of the offence that has been committed take a risk, and the punishment that follows must reflect the offence that has been committed."

Matthews was jailed for life for Becky's murder, while Hoare was sentenced to 17 years in prison for her manslaughter, following a trial last year.

They have both launched appeals against their convictions and sentences.